Cyclokondensationen mit primären Sulfinimidamiden: Herstellung sechsgliedriger Ringe mit λ4-Thiadiazin- und λ4-Thiatriazadiphosphorin-Konstitution

Cyclocondensations with Primary Sulfinimidamides: Synthesis of Six-membered Rings with λ⁴-Thiadiazine and λ⁴-Thiatriazadiphosphorine Constitution 1,1-Dimethyl-ethanesulfinimidamide ( 1 ,) reacts with tetracyanoethylene by elimination of hydrogen cyanide to give the 1,2,6-thiadiazine 2 . In the cyclocondensation reaction of 1 , with tetrachloromethane and phosphines Ph₂PR′ (R′ = Ph₂PNH or Ph) the 1,2,4,6,3,5-thiatriazaphosphorine 3 a , and the ring-open compound t-BuS(NH)NHPPh₃]Cl ( 4 ,), respectively, are formed by P? N-bond formation. The compounds are characterized by IR, MS and NMR data, and for 3a , further by X-ray structure analysis (space group P1 , Z = 2).